if the build tag is gone from the firewall your pretty much screwed
if you have a vin and a bill of sale its easy but with no vin plate.......
if you can buy a vin plate and a clean title at a swap meet you have a chance
if the car pulls when you brake you probably have a siezed up caliper if the rear brakes are grabbing they prolly just need adjusted or the drums turned if you have a caliper dragging that can fuck up your wheel bearing too