useful replies, so I wont reiterate whats already been said. One very important factor that no one mentioned was the R/S ratio of the motor. The ideal R/S ratio of ANY motor from a longevity perspective is 1.75:1. Honda motors vary, with the B16a being the best at 1.74:1 and the B20b at 1.56:1. The ratio determines the force subjected to the cylinder walls, and piston rings due to the angle-length of the rod-stroke of the crank, in the form of wear. the greater the angle the more the wear.

However, most combinations that swing this ratio dont have alot of torque, so you could see where a longer rod greater stroke would be more suitable to certain apps, like drag racing.

If longevity is a major concern I would be mindful of the R/S ratio of the engine you build. After market rods and pistons are highly recommended.

The other thing that Id like to mention is cooling. factory turbo`d cars have generous cooling built into the water jacket. So that would be another thing to consider.

Im not sure about the engine in your EX. but from a turbo standpoint, I believe you could build a reliable turbo`d car if the entire combination works well together.