changing the front uprights

[Beej]

I am aware that (at least for track use) most people agree that the standard Girling front brake set-up (straight off a herald/spitfire) on my 1987 vintage 7 is a tad on the puny side. I am not clear if the same set up and uprights exist on the more modern versions but there seem to be a number of possible after market improvements eg Wilwood, AP, Caterham's own etc and I guess these might fit my early car.

 

It occurs to me that a really easy and cheap solution is to swap the spitfire uprights for the beefier Vitesse/GT6/TR6 type, thus gaining bigger and stronger wheelbearings, larger diameter discs and larger caliper/pad size.

 

Am I being daft? Is it really that simple? The brake force gains must be substantial even though they still run solid discs. The cost saving is massive (well it is for me cos I happen to have an ex Lotus Elan set lying around). I must be missing something.