Just get a Hughes shield for a TH 350, and drill a hole for the electrical connector.
I know it is an SFI piece, but Jeff Hughes told me the hole is an "authorized" mod.
The body seam above the bell housing area needs flattened for clearancing, but we have installed it on a 200-4R with little work. Lot easier than messing with a blanket.
If you decide to go that way, let me know as I am a distributor for them, and be glad to help.