Proparts/Mazzolini headers on B motor in A body.

No tricks. I'm running them (2-2 1/8 stepped) on "B" based stroker and I had no problems other than one tube just touching the cylinder head and a tube touching the pan rail. Both spots were just kissing, so a small dimple and a little grinding on the head and all was well with the world! I have pics, I'll try and dig them up tomorrow. I am now going to temper the aforementioned info with the angle of the collector issue. I'm running a GM 4L80 and the collectors ran right into the pan. The 4L80 is quite a bit larger than a TF, so I don't know if it'll be an issue or not in that application. Since I was moddling 'em anyway, I addressed the other 2 issues with relocated tubes at the same time. Hope this helps!