I agree with Scones !!!! 490 is in the dangerzone lol
IF the budget is no limit, why is it you seem to be going "lowbuck"??
with NO limit on spending...Dart block, turbonetics turbo, water to air intercooler, BIG injectors, a standalone engine mangt system and ALL the top of the line goodies would be the way to go. It all depends on how much HP you want..