Purists gonna hate but I'll be removing all the brazeons related to gear cabling, changing the dropouts and probably adding a Konga yoke to increase tyre clearance.
It looks like I could just de-braze the current dropouts and slide a track end into the slots that would leave in the stays but I think I'll probably add a transverse bit of tubing on the seatstays as I did with my mini Honzo which will lift the back end slightly. (I hate low bottom brackets and reckon the geometry of an 18 year old mtb can stand to be a little steeper!)
A choice of two cranksets, both Stronglight. Some 49d or some 86bcd ones. Probably would need to make an adapter for the 49d as I don't think I'd find an outer chairing small enough (32 or 34t)
I'd like either bullmoose bars or a bullmoose style/slingshot stem.
I made a slingshot style stem for my klunker recently.
I have avoided making full on bullmoose bars (despite a lot of requests for them) as I bought the Nitto/Fairweather ones a while ago and found the angle of the bar just felt awful. I reckon having the angle fixed is a recipe for disappointment but who knows. If I made the stem/handlebar I'd maybe do it with a single bent tube like these ones,
I have submitted an offer for a slingshot stem though,