What to do ??

[brawley]

I have an all original 68' with a inline 6 and 3 on the tree, my original plan was to keep it that way, spent a lot of money on new cam, carb, dist., headers and exhaust all new hoses belt plugs ect... however the engine has developed a bad knock and there is metal in the oil...I can have it completely rebuilt for around $1100..I also found for sale a 327 engine with Saginaw 4 speed for $1700. It will need more parts to complete and changes to be made -exhaust, driveshaft ect...where as the inline will not need any extras. Should I rebuild the 6 and save the extra money for other needs on the truck or spend the extra and go with the swap??