I had a 73-75-ish 280z with a BBC that ran Div. 7 S/G 9.90 class
(? I think it was a 280, not a 260, it was a mixed/matched parts car)
it'd run 9.0's @ 150 easily, mostly at Fremont, Sacramento & Sears Point
it was fun as hell as a drag car
basket case when I got it mid 80's, from a Concord local
he had been racing it already, wasn't the best build
The whole floor & bottom of the rockers were like a spaghetti strainer
they were rust buckets even in a great climate
little to no rust prevention
I put a 2x3" chassis, cage & tin, Lamb strut front
454/468cid BBC rectangle port LS7 based/PG & Dana combo
I may still have a Polaroid of it somewhere
I had a buddy that ran an early 70's Datsun 510
with a mech FI BBC at the time too
I drove a few stock ones, while working at the Concord dealerships
most my friends worked at Concord Datsun, I wasn't really impressed
I think my MGB or the GT was a better handling car
I did own a 71 240z when I lived in Alaska,
was fun to drift in the snow/ice
a total pile of rust too, throw away car, didn't worry about wrecking