Oh, I agree: the Kent power plant series was almost identical.
Except the later five bearing block was slightly different.
Always interesting to me, how John Read's engines (Holbay) tend to be forgotten when thinking back to the real basis start; The 1,000 c.c. "Screamer" period of Formula Three.
Nice pic of a Holbay lump here:
http://img846.imageshack.us/img846/5817/a1030008ul.jpg
Also nice pic here (Scroll down) that will revive a few memories for you!
http://105speed.hyperboards.com/acti.../topic_id/5171
Warley was a most interesting place at that time, Gordon!
Almost every other younger bloke either had or was involved in a racing project.
Four years ago, socially, I bumped into a guy called Ivor Thacker, who worked in the same area: and he was still working on automotive technology and motor sport areas.
And I was recently back in touch with Len Selby: ex Ford, ran a Cooper FIII in the European FIII Championship for one year, early in the "Screamer" days.
Len now runs a biz called Historic Racing: useful man for various bits and pieces.
http://www.historicracing.org.uk/