Allen,
Here's a suggestion for the pipes that has worked well for me.
Cut and flange your existing pipes, bolt together, and un-bolt the back half for competition or fun.
Just buy a header flange kit, weld to each pipe half and join with aluminum crush gaskets-which are easily re-usable.
Cut the pipes roughly 12" or 14" from the front wheel opening to provide a small 'collector' length-helps low-end torque. If you want to make work, make a pair out 'turn-outs' (with flanges) like mine to deflect exhaust outwards. Then bolt 'em up.
Simple, effective and quick to change at the track.
