I'm welding my own exhaust from the Headers back (large-tube kooks (3/4 length) headers for the 4v). I'm using SS tubing. I think I'll go with dynomax bullets instead of cats, and I'll go with the magnaflow XL mufflers (three chamber) to help with drone. I'll likely go with 3" tube atleast until the IRS after the gasses cool down a bit. I bought large mandrel bent tubes, and some straight tubing. Using SS welding wire, and tri-mix gas.
This is going to be alot of welding, but I won't have to worry about fitment!
Now I wish I had the aluminum short block machined so I could put together the motor, install it, and start welding up the exhaust!
Somebody with good cad skills could model my setup for a similar mandrel bent configuration (when I get it done later this summer / fall); (especially for those with kooks headers);
1997 Sport - Work in progress:>
MP BB 304 Teksid 4v- w IC'd / Ported M112
Eaton pulley puller (VMP or BF preferred)