75 front with 67-72 rear?

[full foot notch]

alright, i have a 75 c10 2wd, and soon i am gonna be triangulated 4linking it, as i was talkin about my truck plans with a buddy who has a auto repair shop, and in the back, my other buddy has a repo shop, and in teh back, hes got a 67-72 truck in the back and also has one of the 73-87 trucks, both i can buy for parts trucks for not that much , but one of the guys was like "since you wanna 4link it, why not backhalf teh frame and have the 67-72 trailing arm setup in the rear, and the 75 setup in the front, so its a tad easier to bag the rear, and since im backhalfing it, not that much welding

the only thing in the back of my mind is will the 75 fleetside bed fit on the rear good, and just the basic stuff about brakelines and the driveshaft, IE will i have to make one longer or cut it down

it would be semi unique cause i dont know of many trucks that have done that, and it would be easy as hell to bag