The hydraulic lifters on our cars will do just fine, only if your planning on running higher than 9k rpm or tons of lift will you have to worry about them. Chris Rienke ran his engine multiple seasons in the SCCA without any problems.
Without any tuning it ran 240hp at the wheels using stock 19# injectors. If I had tuned it, put larger injectors and stuck in a bigger exhaust 250hp would have been definately possible.
Had I used a dual honed upper and larger TB, probably could have picked up more torque across the whole power band.
I think the SVT upper and TB should do fine for 200fwhp, but I think the heads and LIM are going to need some work.
Originally posted by Dan Nixon:
Very interesting & thanks. It sounds like the the hydrolic lifters were able to support your fairly radical cams though. So you were using the SVT single X-honed UIM and SVT optimized t.body and making near 100 HP/L or 80FWHP/L. This suggests that on the 2.5L SVT these parts may be good for up to 200 FWHP. So maybe that 65mm t.body and extra X-honing of uppper are not required??
I wonder what you could have pulled out of that motor with the 65-70mm t.body, extra X-honed UIM, and 2.5" exhaust with custom A-F tuning??? 
