If your headers are a couple of inches from the starter, I doubt wrapping the starter with anything would actually accomplish much, but up to you. Like Battlestar, I have always had good luck with the big, factory style starters. The Hedman and FlowTech headers on my old 74 F350s 390 were almost touching the stock starter, ran it like that for over 25 years with no issues. The stock starter on my Fairmonts various FE engines was also almost touching the header tubes, even with close to 12.1 compression, the stock starter and single, trunk mounted battery never caused any issues.Good cables, connections, and grounds eliminate many "starter" concerns. Considering how tight some exhaust manifolds are to the starter, like 428 CJ manifolds, and how much longer the cast iron retains the heat compared to thin steel tubing headers, I would think most headers would make a starters life easier. Especially if the headers are ceramic coated. Considering than most aftermarket mini starters were originally designed to spin over a little 4 cylinder Japanese engine, giving one the task at cranking over a large displacement, high compression V8, seems to be asking a lot.
