Thats up to you man, the strait up swap would be less work. A full build would cost more and obvioulsy be alot more work. I have a stock bottom end and drive it every day.. with a little more than 425.. lol. Deff with the T-56 tho
True true... I guess I could buy a cheap high mileage cobra drivetrain and rebuild the motor and tranny.well to put it into perspective... i bought my shortblock for 2600. re-using the PI heads but having them gone through, new cams, valvesprings, gaskets, etc etc i'm over 6k into my new motor.. thats reusing everything from the intake, valve covers, timing cover, blah blah blah.. you are going to need 4v heads, cams, chains, tensioners, timing cover, gaskets, intake, brackets, coils, headers, wiring harness, tune, throttle cables, throttle body, power adder... dude the list keeps going and going. and thats not counting the transmission. to do a 4v swap, the easiest and cheapest way to do it is to buy a complete motor out of an 04 cobra that already has everything complete with the blower and transmission.. 6k is a steal for what you're getting out of it.
but its 0 miles and surely able to handle daily driving 425rwhp for much longer than I will probably be keeping it.true, but it still doesn't have a transmission or a blower.
+1 have seen this in person.. motor with over 100k making 500+ on the dyno.. all stock internalsthat is true.. but a cobra motor is pretty damn indestructable.. even with 100k on them they still run strong.