1988 K2500 4x4 SM465 w/ BUILT 350

[88K2500Silverado]

I have a 88 k2500 with a well built/high performance 5.7 TBI. I'm in the process of getting it road ready again, and I would like some guidance. The engine itself is relatively new, very low miles since rebuild, mainly because it sat for 3 years in the yard due to a slave/master clutch cylinder going out on it. I got tired of seeing her sit, so I walked out there one day, plugged the battery up, (interstate megatron) and she fired right up! I moved it and she got stuck because it had just rained. I pulled her out with the Tahoe and swapped the cylinders along with a new clutch line. I haven't had to replace anything but a cruddy air filter since then, but I'm wiring a tach here in the next couple of days, how do I do that? Also my fuel gauge is difficult to see in the daylight, and even at night it isn't real bright. How do I swap the bulbs with dimmable LEDs? I also would like to look into a bucket seat swap, the ol bench seat ain't cuttin it anymore. I put in a radio and swapped my rear speakers for a cheap set of sonys but they sound ok, so I'm not regretting it. I was thinking of mounting the tach on the side of the dash, is that a good spot? Not having a tach just really ticks me off for some reason. (Funny story: I drove down the highway the other day and I thought she was pretty weak, because the motor was bored .30 over, a HP cam put in, flat top pistons (not sure what compression), and a (high pressure?) oil pump. I think it's a high pressure because on startup it pegs out on the oil gauge. I got to fiddling with it and realized one spark plug wire had jumped off so I put it back on, and now it hauls ass!) My 4x4 actuator is out and I want to upgrade to the electric actuator. How do I do that? Also my first gear or "granny low" grinds when I go to put it in gear, but unless I mash the clutch it won't go in so I wouldn't think it's my clutch, especially since no other gear does it. Thanks in advance.
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