well here is my specialty ive been dealing with HX35s on 4 banger Eclipses and Talons. They have a housing you can buy to bolt them to a stock manifold and they are hitting 25psi+ at or around 3200 rpm on the 4 cyl engine so on a v-8 i would imagine very fast spool time. The he341 will spool faster on the other hand but not sure about power ratings on it. Now the questions being will this car be on the road before you have it at 800rwhp if so then the he341 may spool a little to fast in certain scenarios causing a ticket. But it all comes down to preference. Do you want the slightly slower spooling HX-35 but potentially more power or the quick spooling he341 that will more or less give you the wholeshot and make it tougher for someone to pull on you and pass you. Both are great turbos and either way it will make great power.