To the OP - photograph the bike from the drive side, both for folks to see here, and especially for your ad.

Aero brake levers are a replacement, quite possibly a mod done early in the bike's life. Likewise the early "Look-compatible" pedals; they appear to be the ones Shimano sold on license. Those would both have been common mid-late-'80s in-service mods.

Surprising that Miyata, who made their own frame tubing, would spec a hi-ten fork on such an otherwise well-appointed bike.