The 73-87 (actually 71-87) front suspension does require you to drill holes to bolt it in. I think 14 of them. in total. however yes, on a 55.2 or later it is almost literally a bolt in.
The last time I checked, you can get the front IFS at a u-pull-it yard for about $50
Clipping has issues, and if not done right, will develop cracks where the two are welded together.
IFS alone will not make a "nice steering and stopping vehicle"
Power steering, new bushings and king pins and a disc brake upgrade would handle that.
