Picked up my brass back block today... looks nice and fitted to car ready for testing on sunday.
For mid motor its much better than the original part, much easier to fit beacause the thru holes get rid of the pesky nut tightening nonsense, plus one pair of spacers done away with.
Good work Noel.
Just for tuning info I added this back block with a brass battery block in rearward position. Moments of these two weights pretty much cancel each other out, so increases rear axle weight by over 40 grams, with only 1 or 2 grams change at the front axle.
Cream = "adding weight where its needed"