360 La build ideas!

As far as the turbo rice burners (and I have rallied thousands of stage miles behind a 250-275 HP turbo Mistu 2.6L 4G54)...... the ones that don't quickly blow up are probably at the 10 lb per HP range in weight to engine power ratio, maybe as good as 8.5 lb per HP. For your car to match or beat that, you are looking at the 350 HP range out of the engine (not at the tires), 400 HP tops. And you will have a broader torque curve and no turbo lag. THAT is much more doable than the 600 HP out of the engine that you think you need, and is what RRR any everyone is trying to aim you at.

Also, with a RWD car, if you are drag racing, you can easily set the suspension for some good weight transfer to the rear wheels to win in the tractoin department, while they are fighting to keep weight on their FWD tires. You have an easy task if you listen.