700rwhp supra for roadracing and daily driving

[pwpanas]

Originally Posted by CustomMKIV

In your opinion, would it be worth having Titan motorsports build an 800 rwhp engine?...

Titan Motorsports would absolutely LOVE to take your $$$ for this project, and they'd be perfectly within your specifications to ship you a new oem shortblock from Toyota, with absolutely zero parts/labor invested on their part. So in short, my answer to your question is absolutely not. A Titan-built 2jz-gte would only be worth your $ for a goal of 1100rwhp, up to 1600rwhp.

Originally Posted by CustomMKIV

...If so, does rebuilding the internals help increase your low end power?...

No, unless you go with higher-than-oem compression pistons. However, the higher-than-oem compression pistons will require you to either run an even higher octane of race fuel ($) or alcohol/E85, and/or it will limit the boost you can run with any given octane.

Originally Posted by CustomMKIV

...I'm also curious about the width of the wheels I can put under a widebody. The Top Secret widebody fenders are 33mm wider in the front and 50mm wider in the rear. Can I fit 13" (335's) under the rear end...

Probably not...at least not without additional width added by the shop you use to install the widebody kit.

Originally Posted by CustomMKIV

...and can I fit 10" (255's) under the front?

Yes, but 255s are too narrow to match with 335s on the rear. You should run at least 285s with that 10" rim...or get a 10.5" or 11" rim to run the 285s or 305s, which should also fit under the Top Secret widebody front.