my blacktop itb have webers velocitys and sound ugly and are smaller and i need a set off new ones. please im not bill gates , im on a budget.... please low cost to buy fast beacuse i am bulding a new motor.

+1! I hear they have really decent stack. Otherwise you can look on ebay. Yes they're cheaper, but can't tell you about the quality though.

SQ engineered theirs for performance....theres a right way to make stacks and a wrong way....T3 made theirs to suit both size ITBs thats the wrong way...ebay models except for the short red ones that are copies of the IMEC japan version are just like t3....look good no real performance gain