Help me spend some $$$$

Nice looking car. Congrats on your new ride.

I would completely disassemble that front and and replace all bushings, especially the lower control arm pivot bushing, and new ball joints, tie rod ends, and idler and pitman arms. These cars handle nice when the front ends are in good condition. Does it have a sway bar? If not I'd add one.

As for the brakes I'd leave them manual. Find out if someone swapped the single piston discs on there or does it have original type 4 piston calipers? I'd also put 7/8" wheel cylinders on the rear drums to better balance the braking. Order them for a '72 D100 Dodge truck 2 WD 318 and they will bolt right on. An adjustable proportioning valve on the rear brake line helps too.

And the Goodmark G-Stop braided brake hoses are nice to help firm up that pedal. They make kits that bolt right on to replace the two front and one rear rubber brake hose.