Had my own parts
Since I had my own parts, all he did was cut and weld the adaptor at the right height to fit with no problems. I think he charged me 15 bucks to do it. If you have the equiptment and time you could probably do it yourself. As for the offset of the throttle body Lee Thompson took care of that. Last year he took orders for a small plate that resets the throttle body to its normal position. Needless to say I got one when he had them.