I'm going to get back into motorcycles after about 20 years out. The main place I plan on riding is ideal for a trials bike but since I've been out of riding the fuel tanks and seats have disappeared (average .5 gal. as compared to the 2 gal size of long ago). Should I settle for a newer enduro type bike, look for an older trials with more of a gas tank and seat. Attempt to modify a new trials bike. I'm worried that a vintage bike would be hard to get parts for plus I like the newer bikes superior handling.