$100 a good deal for 8 Donovan forged aluminum connecting rods?
Only way to tell.
Measure the length from 'Center-to-Center' between the Rod Journal and
Piston-Pin Bore.
The 'stretch' is what we're looking for here.
Back-in-the-Day, as a general 'Racers-Rule'
You usually got '1-Year' out of a set of Aluminum-Rods in a Modified Production
Engine that was run hard.