In the late 70s, we usually replaced the F70s on the 1968 to 1972 cars with H70s using the later 8 inch rally wheels.
We used L-60s but had to slightly relocate the E-brake cabling and trim some bodywork slightly......I think on the inside of the fenders.
L-60s easily fit on the 1973 and later cars.
I replaced the p90 option G60-15 red stripes on my 1969 427 caprice with L60s on the 8 inch rally wheels and the flared fenders of the caprice easily contained them.
There were also the guys who back-halfed their mid-year Stingrays and stuffed 12" slicks up under 'em behind a nice runnin Rat ..scary fast.
Watched one o' those show a Hemi Road Runner the way home one late nite out on Union Hills .. Vette had asked me earlier if I wanted to run and my lil firestone cheater slicks
had no chance, then when my Hemi actually got a grip (he was about 3 cars out already by then) ..he kept pullin away. Got my '67 Hemi GTX by 7 cars or so.
The Road Runner had 12" slicks also .. but that lil stingray w/shorter wheelbase and comparable power just ate him by about 5 cars.
Guy in the Road Runner was *pissed* off .. was tellin everyone he ran low 10's and frankly, it wasn't all that.
Guy in the Vette was very cool .. very much a gearhead like me.. we compared notes ..he laughed about the Road Runner dood
..Vette owner said he ran 11.0's in the Vette on most days out at Beeline.. if he got a good bite in first.
Like myself, he had a list of things he still wanted to do .. more carb, more cam, better heads ..the usual

-Frank aka GE