90s Trek Multitrack Sizing?
 

I'm trying to narrow down which early 90s hybrid I want to use as a platform for my gravel/all-rounder/cyclocross build. I would like to use a Trek 750 or 790 Multitrack (love the company history and US-made lugged steel), but I have a suspicion that I fall right between the medium (19") and large (21") hybrid sizes Trek offered then. From my research hybrid frame sizes run smaller than an equivalent measurement mountain bike, like a road bike, just not as much. I'm 5'11" with short legs, 32.5" standover inseam to be exact. Anyone have one of these bikes and able to offer some guidance? Thanks.

I've been trying to find one of the lugged versions for a while, and I found a reference in a Trek publication that the later tig welded bikes have a lower bottom bracket height and are are more oriented to mixed use, while the previous lugged bikes have a higher bottom bracket and are more oriented towards offroad rideing. So if your in between you might want to size down for a lugged frame.

One of the dumbest things I did was sell a 750 that shared frame geometry with the 520. I made money on it, but I should have kept that bike. It was clean, and I paid $20 for it. DUMB!