Well. You better just keep the wallet open.
My 87 toyota. I bought for $500 (what a deal... ya right.)
Anyway. To make a story realy short. I got close to if not over(probably over) $2000 into it in like 3 years, not counting purchase price. Its finaly running good but I have to fix some kind of rust every year so it can pass inspection.

My ultimate fix for the Toyota is a 07 Ranger FX4

But it is so much better when you finaly get it funning. Took me 6 months after I got the Toyota to finaly get it on the road and it felt real good to finaly drive it.