i have a 91 ls and i am gonna have a guy rebuild the motor over the summer then sell the rebuild head to pay for a vtec head. i am gonna put in rods, probly eagle pistons,rings opins.. anyways what vtec head should i get pice and performance wise, i was thinkin of a si head but if i can a gsr or and r which ever is better, is a ls/vtec good to boost b/c i was plannin on turo chargin it and suggestions