Wanted: Old Shimano 600/105 bits for a Ron Cooper lo-pro

Hi all. I'm starting to collect parts to get my Ron Cooper lo-pro up-and-running.

Planning on a 1x7 build (only has one DT shifter boss) and I need parts.
Budget takes precedence over condition - this is not a concourse level rebuild!

Have some lovely dark green/blue anodised BR-1050 calipers thanks to Tester so I'd like items of similar vintage.

Rear derailleur – something like a Shimano 600 7 speed? - sorted now.
DT shifter – compatible with the above - also sorted.

Other bits I could use - Shimano crankset. I currently have a 600 set, fc-7260 i think but would like an option.

Wheelset - something like mavic cosmics of that era. 7 speed block??
Otherwise I'm buying some R501 if they would work.

If you have anything to clear out, let me know!
Cheers

I have 3 rear derailleurs, 2 105 both near perfect, one has blue /
green anodised jockeys. and a 500EX , Campagnolo wheel set, choice of blocks, pair Dura Ace DT shifters, PM if interested in any of this, also lots of nice bar stem combos also, saddles, pedals etc
Post not a prob.

got an Ultegra 600 tri colour rear mech in good order and a pair of 105 7 speed DT shifters (currently band on but I have some Shimano half moon braze on bits so they fit the pegs)
£32 gets both of them posted to you

Have a few bits on the way. Thanks for all who replied with parts and offers.

Still in need of cranks. Shimano 105 FC-1056 ideally...

Cheers

I have some 1056 cranks in really good condition iirc. £40 posted