80 Quattro Turbo exhaust clearance

[mccohens at verizon.net]

Now that the CIS is removed I see the downpipe from the turbo is way too close to the body, causing the vibration every time I took a corner to the left hard.  I have no problem taking the downpipe off and whacking the sheet metal with a BFH, just need to know how much clearance I should go for.
Also, the car developed the classis exhaust ticking right after I forced the exhaust system together.  Hoping I cracked one of the accordians, but knowing it could be the exhaust manifold.  Any hints or BTDT to locate the source of leaks and where they most often occur?  Any listers in the Phila area that want to stop by and have a beer/comment on the transplant?
Randy Cohen
Chalfont,PA