this might help on the lighting
http://www.superbrightleds.com/
the amps, most good brands have a group of amps that look the same but are different wattage/channel/sub.. rockfordfosgate has the power models and then the punch.. I'm sure most do the same as alot of guys do the shows and what the amp group to look the same..
the l.e.d. following the engine.. I have an idea.. that I'll be try'n when I have free time..
I have an old boom box that had the leds that followed the music and that curcuit is seperate from the rest of the box.. and a 4 wire hook up..
I'm sure if I add two elcheapo mikes near the tail pipes. I can get them to follow the engine, the leds are all red but thats easy to change.. mount it in the cowl hood scoop..
j.c.whitney had alot of dig. tachs that where led with green/yellow/red that you could make work.. or find a 90's g.m. dig tach dash gauge..