As a result of the Pentagon deciding to open up competition for engines powering the F15 and F16 The USAAF started the Alternate Fighter Engine [AFE] program or 'the great engine war' developed between the Pratt and Whitney [PW] the original engine manufacturer for the F16 and General Electric [GE]. GE turbofan engine it was originally found, did not achieve maximum designed output and it was found that the inlet, if made bigger, solved the problem. To differentiate the aircraft and their power plants, PW aircraft block numbers ended in 2 [block 32,52] and GW, with their wider inlets ended in 0. The engine components supplied by Eduard are for the F-16 Block 52 small inlet aircraft currently being used by USAF and South Korea. The PW F100-PW-229 is rated at a maximum 29,100lb. The original engine from PW F100-PW-200 after burning turbofan was rated at 23,830lb.

The title of this product is a little misleading as you are not supplied with a replica of the whole of a F100 PW-229 engine. What you are supplied with are five beautifully moulded resin parts:
R1 second fan.
R2 first fan.
R3 low pressure turbine fan
R4 the re-heat chamber.
R5 the exhaust petals.
There are two photo etched pieces [PE1 and PE2] that represent the reheat fuel pipes.

The Tamiya kit represents a Block 50 aircraft so these engine components will allow a block 52 to be made. You will need to use a narrow intake as the Tamiya kit has the larger intake of a block 50 aircraft.
The the resin and PE parts come in a strong two part vac-formed transparent plastic package. The PE bits are backed by strong card. The resin bits are protected with sponge. Well designed to survive most journeys by post. The instruction sheet is on a A5 piece of paper and they could not be simpler. Unfortunately there is no painting guide, which would have been very helpful.
On the resin parts there are fairly substantial blocks to be removed before fitting, so you will have to exercise a little care when removing them. The removal of the block behind the first fan [R2] will allow you to see the second fan [R1]. In the instructions you need to install a piece of wire 3mm long and 0.3mm wide into the front turbine spindle [R2]. R1 and R2 replace the front turbine of the kit, which slots into the rear of the air intake. To the rear there is some fantastic casting particularly the lining of the re-heat chamber. The exhaust is also beautifully moulded inside and out. I did not detect any flaws in any of the castings.
The two PE pieces represent the re-heat fuel distribution pipes. They are very delicate almost spider web like and will need very careful handling.

This is a fantastic start to convert Tamiya's 1/48 F-16 block 50 into a block 52, but you will need to find a small mouth intake to go with this beautifully cast set. I don't know if Eduard are planning to release such an intake and it would be a shame if they didn't. It may be possible to fit this to Hasegawa 1/48 F-16CJ Block 50/52 as this kit includes the small intake for the block 52 aircraft. It will enhance your Viper no end and so is highly recommended.