Anyone's help would be so appreciated.  My ex has passed away and we are trying to finish his work on his 96 Chevy S10 in honor of him.  As far as I can tell, he finished Cnotching the frame and was relocating the gas tank (custom gas tank).  The thing is I don't know how to reconnect the fuel lines to the new gas tank.  It has different fittings than the stock ones.  I am clueless!!  Any help or direction on where to go would be appreciated.  

First off sorry about your loss but it is a cool thing that you are doing the truck for him.

Pic of the new fittings would help.  

If the stock lines are still connected to the truck, there are two lines the bigger one is the feed and the smaller line is a return.  I ran a barbed fitting out of the tank and connected a rubber gas line from the tank to the stock hard line. If you use rubber 3/8" fuel injection line it will slide over the factory hard line and then just put a couple hose clamps on it

Be sure to get fuel injection line (higher press rating) for the feed  the return does not have to be you can use reg gas line for it

Hope this helps