Benefit of LT's with h/c/i?

[deadlast]

I know LT's can give an extra 10 something hp when u got a fairly stock engine. However, what kind of benefits would i see getting LT's verse shorties after a full H/C/I?

 

[DMAN302]

Easly 10-20 HP but not just peak, right across the the board on both HP and torque figures.

 

[N8Miller]

sometimes going to longtubes will only add 4ish HP, but it will provide lots more TQ!