Easier vehicle to sell now k25 or r3500?

[cdub2010]

Im in between a few projects and am thinking about cutting one loose. Whats a better or easier sell in todays market? I know price is always the main factor but whats more popular? I leaning towards keeping the crewcab because im not sure if a '77 ls swap is sellable, probably should have kept it stock.

'77 White GMC K25 with 5.3l 4l80e/np241 4wheel disc brakes basically rebuilt rattle can quality underbody, Redone newer 87 interior Clean body with newer rustfree square dual tank door bed currently undergoing a respray. Newer 31" tires on aluminum rims. My goal was super clean hunting fishing rig not show truck. Will be solid white with full trim when done.

or

'88 White GMC Crewcab Dually R3500 454 tbi/400 trans 3.73 rear, sierra classic power windows locks, bone stock 121K miles needs a good cleaning and polishing, little surface rust just a wyoming truck with 3 years in Michigan. Bought on a whim whth no plans just a fun driver.