I have similar sentiments Bruce, but the problem with Touring Car Masters is finding parts. Unless you are running a Mustang or Camaro where new panels, even new shells are available. It also got expensive for engines, and they introduced the control LS based engines. It used to be awesome seeing 302 SBC Toranas and 350 Camaros & HQ's fight it out against 302/351 powered Fords in local or imported forms. With a screaming Hemi powered Valiant throw in.
Remember though that for a long time now V8 Supercars has been basically Australian Nascar. Neither the cars nor the engines were anything like production, just facsimiles with high-performance old-school engines at least in the Ford and Holden facsimiles. Also remember that GroupC racing used to be essentially Mustang vs Nova then Camaro from 1968 with a SuperFalcon and a HK later HT Monaro thrown into outright contention. More often than not it was won by a Mustang or a Camaro though - the ATCC was won 5 times by a Mustang and twice by a Camaro with the only exception being Beechey's GTS350 in 1970. Mustang and Camaro also featured in the later GroupC and GroupA. So when you think about it, in ATCC history Camaro and especially Mustang have been around longer than most other cars raced.
I'm sort of with you on the petrol cars, but drive and EV and you'll be impressed. Once the battery tech is more advanced you won't want a ICE as a runaround. If I live long enough I plan to have my pair of Warwick Yellow HK's, one with a manual 427 BBC and the other converted to be an EV. The bolt in conversion for the electric motor and controls can be bought now, it is just the battery technology has to improve to interest me.