Yeah, I do sound 'hard core' a lot. Peter Brocks interpretation of HIS Coupe, as found in the modern rendition by SPF, is very well done. Like JBL, which also makes no apologies for deviating from original specs, it is a world class performer and can stand on it's own merits.
Lest we slide 'to far from the path', as I feel the industry in general has, I feel compelled to point out the 'obvious'. That to retain a certain standard of vintage correct specs is a worthy goal.
If I was looking for a 'track' car, above all else, I'd consider the FFR replica for it's light weight, ease of build, cost consideration, etc. Note; the FFR should be spec'd with IRS (a bit more expensive, but worth it)! I'd also consider the SPF, no doubt equally at home on the track or the street and a formbidable opponent. But if I was considering something more period correct, I'd consider the Classic Roadster HDR Coupe. I wonder how well IT would do on the track? Something I'd have to research first, if track use was high on my list of priorities.