GS450 was an early 80's UJM actually it was a 70's UJM.
The savage tank is so wide in the front on a savage because the speedometer is in it, to get any fuel capacity (say 2.5 gal) they had to have that wide in front tank. The speedometer makes it much wider. The 80's and 70's bikes like the gs450, intruder, magna, etc etc etc all had 2.4-3 gal tanks and none were as wide as savage mainly due to not having speedometer in the tank. The GS450 or was it the 550 had a nice teardrop cruiser-ish tank. Would have worked just fine on a savage.

A speedo less tank designed to fit with a fork set with far less offset is the key, the massive offset in the triples are to accommodate the tank, not any handling related or look related reasons.

Now speaking of style over function - the speedo in tank looks cool.
It makes for handling and FE related nightmares. Exacerbated by not having 21" wheel etc.

Cool.
Srinath.

True, the advantage is, 21" spins lesser rpm for any speed, than a 19, and the moment of inertia is dependent on square of the rpm. So 10% less is actually 20% less.

The next thing is, the offset needs to be reduced and a FE without the savage's constraint of the tank will be less, and 21" wheel in my case was further reducing the trail because I ran the axle trailing  the fork legs reducing trail even more.

Its had a lot less trail than stock, but yes a 19" wheel would reduce the trail even more in that setup.

Cool.
Srinath.

hey Fast 650, that member was Blade......and he still drops in occassionally-

Yes +4" from Frank's Forks. Great fun to ride.