Replacement Starter

Anyone have experience with a '68 Coronet, 440 CID and Hooker Super Comp headers and power steering. I need to replace an unknown brand mini starter with a mini starter from 440 Source. Can I wrangle the old one out and new one in with the headers on? Looks impossibly tight from above but haven't gotten under the car yet to see from below. What am I in for?

You'll have to pull the header.