I had one of these and the previous owner had put a washing machine
motor on it (1hp 3450 rpm vs 1/3 hp 1725 rpm). The motor was too big
and wouldn't allow me to move the belts (he just drilled out cabinet
door mortices for blum hinges). It was a nice machine but because of
the modifications it was no longer as useful and I couldn't slow it
down (the 3450rpm didn't help with that either). I've seen several of
these in our local paper with 1hp motors listed, so be sure yours isn't
modified such that you can't move the belts from pulley to pulley.
I ended up selling mine and buying a 16.5" fixed head and have been
happy as pie ever since.
Oh, one other thing worth noting is the footprint it takes in your
garage. Because of the size of the head it requires a stand with
splayed legs and ends up taking up about 2' x 4' on the floor versus
like 1.5' x 2' (or whatever, you get the idea -- it was a pain having
to try and walk around the base of that thing, I really like the small
footprint my current DP uses).