need advice and possible connections

[Budshoot69]

I need some advice on my truck, it's a 1981 GMC c1500, it has the 350 5.7, i just put a new filter and plugs and wires on it and a new cap, and i just replaced the valve cover gaskets so it's runnin pretty good now, i just need to know what the cheapest way to get good horses outta the motor, and i need a seat, or bench or whatever, if anyone has any suggestions about that lemme know, i also need a dash, mine was shot, and possibly some aftermarket guages if anyone knows where to get them, i also need doors, preferrably automatic, but if anyone knows where to get any kinda doors for a decent price, please let me know, the last thing i need is bumpers and grille, preferrably chrome bumpers, decent price hopefully, and any kinda grille, preferrably like a show grille, not just stock, but anything'll work. Im gonna post some pictures as soon as i get my other computer working, i already have them on my card. Any suggestions at all would be helpful!