R33 - Helios Red (1979 Kicker) - Nearest Rattle Can match?

Thanks for that Terry, I think Milano Red R-81 may be the one to go for, over a bright yellow pre-coat, rather than grey. This would be because it is still in use as a 2021 colour by Honda.

The 3E5 Toyota Super red is good as well but not current, a 90s colour.

Porsche Guards Red is current, but again would need a bright pre-coat layer to be closer to helios red.

I read a bit on Porsche Guards Red, within a forum post, owners bitching a bit on how hard it was to exact match, if you sprayed the likes of a bumper, in fact it would never 100% match, and repeated blending was not good either.....

So I will ask the auto-paints place I think, the milano red is off the rack, but the best way to go may be to get enough paint for a few sets mixed in one go. Mix and match with NOS my not be viable anyway.

I'm going to pursue 

Milano Red R81 over yellow, (if mixed perhaps tweeked with 1-2% yellow, over grey, but could they replicate in a few years??.)

or

Historic Colour;-  Porsche 6011 Signal Red, which would go over the medium gray primer already on the panels that came. There was an old Porsche I used to frequently walk  past back in the 80s, that I admired, which would have been that Signal Red.