Bodywork is cheap and takes a lot of time to do right. When I am limited on funds for a given period, I spend time on a given area of the body. Since my truck is "rattle can flat black" I can work on a small area, then paint it at the end of the weekend and it looks better and better each week while I save for the larger projects.
Last weekend I bought a gallon of bondo, box of paper, and 3 cans of paint. Grand total was $35 and will keep me busy for the next few weekends. This weekend I picked up a '95 Chevy Silverado 60/40 seat for $50 off Craig's List. It cost me $8 for all the bolts, springs, and wire to install them with full adjustablility. I also just bought a complete clear light kit off ebay (from GMC Pauls) to replace all my side markers and tail lights with clear lenses with colored bulbs. Total cost with shipping was $53. They were willing to combine shipping on the side markers, reverse and tail lights that saved me $18 on the complete set.
Next is a white face guage kit ($22 shipped off ebay) and carbon fiber overlays ($5 a foot, also ebay). With new bulbs, my complete dash rebuild will also be less than $50.
All my little projects give me something to do while I save for the motor rebuild. I have also picked up a lot of stuff over the past few weeks like my Carter AFB carb ($50), Edelbrock Intake (also $50), MSD distributor ($60), Edelbrock air cleaner and valve covers ($50 for both) all out of the paper or off Craig's List. The dollar amounts are small enough that my wife doesn't freak and right before her eyes my truck went from a $600 farm truck to a good looking cruiser and she doesn't know why
Yoou can also sell things you upgrade to recoupe osme of the costs as well. Good luck on your rig.