exhaust leak
 

My 88 T2 has a cracked exhaust manifold. What all should I replace While I'm replacing it? Sould I replace gaskets or will they be OK to reuse?
It also has an oil leak coming from the turbo area. What is this from most likely?
Any mods or upgrades I sould do while I'm in there?
Any advice?
Anyone with a good manifold you want to sell?

Thanks,
MIke