The main things you will need to get started will be the head unit, the bracket, and the piping. The bracket is actually the first thing that you should acquire and go from there. The SS kit will be the most complete option but it is not a complete kit. You will still need to buy extra things (exhaust, tuner, datalogger, wideband, MAF, intercooler, gauges, etc..).
Anything more than a 155lph pump and you will need an FPR and you will most definitely need bigger than 155. The basic SHO Nut unit is great and the dual feed option is better if you are going for big numbers. You need to plan your attack and go bigger than you think you will ever need. For that reason I switched from the 255lph to the Walbro 350lph but I'm pushing 18lbs. Same with the injectors. Go bigger than you will ever need and it will save you in the long run. Accel 48s will do the job but at full boost depending on how much you are pushing those will be maxing out. For that reason I upgraded to Injector Dynamics 1050s. Those will out flow anything I do in the future.
If you plan to be intercooled then buy the head unit/bracket and then build the piping around he intercooler. If you dont plan to intercool then get the SS kit.
I recommend going with a slot style MAF and tuning with a Quarthorse. Adam Marrer with Pops Racing still supplies parts and tuning for these cars and is highly rated.
If you plan to piece together your own kit, Ben Kadic in the FB groups sells a reproduction of the SHOShop brackets. I think he offered both styles(alternator). Get that and go from there.
The cheapest option would be to buy someone elses project and make it your own. Thats how i did it. I bought a nonrunning SHOShop car and have slowly been upgrading it to modern components. I still have tons of money invested in it but no where near what I would have if I had started from scratch and it runs better than it ever did back in the day.
-Chad