uh oh...

my $0.02
*best suited: T25 (road use) I've driven one on an A12 engine, and it wasn't laggy at all.
*easiet install: draw thru, on J pipe to turbo, then a pipe into standard inlet manifold. Better off getting some manifolds made though. And when making them, leave some room or provision for injectors in case you decide to upgrade to EFI later.
*best power gain: ? there can't be a single answer to that question. if its a street driven car, you don't want to compromise driveability too much.

anyway, if you do a search on this site, you'll find so much info your head will hurt