67 frame swap rant

[1fun71]

Ok long story short. After being in my family for 40+ years, then being sold before I had a chance to buy it. I finally found and purchased back the 67 that I have a lot of childhood memories in... but, its bitter sweet because in its 2 year hiatus it was modified and not really to my liking either. It was originally a plain jane 6cyl truck but is now sitting on a 2003 yukon 4x4 frame and running gear. its not completly finished, its basically a semi permanent mock up that you can drive. I figure its almost as much work to finish right, than to but back to mostly stock.. I do have a 67 frame minus engine and trans.. but im on the fence, do I keep going where the other guy left off? or do I build it like I would have had it still been stock? I know this is a question I need to figure out myself but Im almost to the point of giving up on it all together.. I just wish it was like it was when it was sold. I have limited time and budget for this project and im thinking money wise selling the 03 everthing underneath would really help with paying for the parts I need to put it back on the stock frame.. Im just kinda venting some frustration now and I appreciate anyone who will listen. Thanks!