Complete Motor with headers.

Can anyone of you Pros tell me from experience as this boy has never tried this and was wondering if it can be done to save time and energy. I removed my block from my 1970 Dart Swinger earlier this year, but had removed the rusty headers first before pulling the block out. What a pain in the @#&$ that was, and as I remember what a pain it was to install the headers years ago while the block was in the car. Now that I'm having the car repainted and restored I was wondering to save time and misery can I install the headers on the block and tighten them down, and then put the completed block in the engine compartment without complications. Just for info I'm getting new different ceramic ones to put on, not those rusty ones I took off. I'm seaching and getting info on the best ones to get later on for my car. Anyone for some suggestions. Just the block and bellhousing with headers attached are to be put in. I'll get the transmission put in from the underside afterwards. Can it be done without scratching the paint job if careful and with 3 people doing it. I have my sons helping me on this. Thanks ED