If you are looking to go further than just slapping on a turbo go with the 60, the 48 will become a bottle neck after more mod's are done, the spool up time difference's are minimal.. 500rpm at most.. .63/60 t3 can support 25psi when it starts making too much heat and not enough boost.. it will support 300 - 350hp and an 11 second run with a 2.3..
If you have the money get a t04e .50/ t3 stage III .60, thats about the best turbo I have seen for our two engines.. it has a huge sweet spot and almost impossible to get surge with it..
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88 Merkur, just a little 2.3
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