First elco so I've got a LOT of questions:
Much of the chrome trim around the bed is gone - available aftermarket?
The trim is avalible aftermarket, here's a link to Mikes Montes but there are other places with the parts avalible. http://www.mikesmontes.com/T-top-Hardto ... _c_44.html
Rear springs have given up - Gbody only to swap in - or can I find springs from something else?
G body or F body seem to be the common swaps, new replacement springs are not that expensive. If you are going to be doing any hauling with your Elky I would put in a set of cargo coils
I really like the 5 spoke IROC 16 in wheels from 80s era Z28s - clearance issues with them?
Use 4 rear wheels or use spacers on the front rims and they will fit fine
This last one is such a noob Q - don't laugh - where is the fuel filter on a F.I. 4.3?