Glad to see you back around. I love that color of TA. Yours looks great! I used an aftermarket tank for my LS swap and I was surprised how well they replicated the original. I too used my original straps, haven't heard that the OER units don't fit. Good to know.
Never got back and add up all the $$ you spent lolIt’s a lot less painless a little at a time!
https://www.firebirdcentral.com/1974_1981_Firebird_Fuel_Gas_Tank_Straps_Pair_p/fue-18.htm