Still have a Linear Link USA made 12" bar beam saw for sale.
This model has a built-in push-button oiler, unlike the prazi attachements.
You can buy the kit straight from Linear link yourself to modify your existing Skil HD77 saw for about $250 or so, or you can buy the entire unit pre-built from them for about $570.
This unit is straight from Linear Link, based on a USA made Skil HD77 saw body.
This unit is in great shape, very clean. Only problem with it was a cracked rubber strain relief on the cord, but I repaired that with some sections of heavy duty tube shrink wrap - good as new.
Selling the beam saw for $280. Add shipping of about $30 - let's say $300 shipped.