I compiled this parts list to help with converting your H-Body car to five lug pattern (5 x 4.75") with new parts. Utilizes the old style tapered bearings and the stock H-Body ball joints. The parts that I didnt link to are based on RockAuto pricing. It was interesting to see what it costs going with all new parts ~1000$ USD. You can also look for used parts and save a bunch of money. I have done the conversion but with stock spindles, brakes, axles and I upgraded to the larger S10 ball joints, so use the info at your own risk.
1988 S10 rear wheel drive used for lookup
FRONT:
Spindles, 210$
SUM-CSUM77M500 - Summit Racing™ GM Metric Spindles
https://www.summitracing.com/parts/SUM-CSUM77M500
H-Body/S10 Ball Joint Adapter Kit, 69$ (Allow 2 - 4 weeks for delivery)
http://v8monza.com/bja-order_info.htm
Disc Brake Kit, 220$
Power Stop KC1482 - Power Stop Z23 Evolution Sport Brake Upgrade Kits with Calipers
https://www.amazon.com/Power-KC1482-1-C ... B00CMOVFME
10 mm stainless steel braided disc brake hose 12 inches long with banjo bolts and copper washers, 44$
https://www.ebay.com/itm/10-mm-stainles ... 0843861269
Bearing and Race Set Front Inner, RWD, 6$ x 2
TIMKEN SET6
Bearing and Race Set Front Outer, RWD, 8$ x 2
TIMKEN SET34
Rotor grease seal Front Inner, RWD, 2$ x 2
TIMKEN 8871
Spindle nut 3/4 - 20, keyed washer and cotter pin, 6$ x 2
Dorman 04993
Dust cap O.D. Diameter: 2-3/32" Front; RWD, Almost free for 5 caps at RockAuto lol
DORMAN 618102
New front dust shields are NLA
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REAR:
26 spline axles, Moser Engineering A102607, 295$ (stock H body carrier)
https://www.summitracing.com/parts/msr- ... /year/1988
OR
28 spline axles, Moser Engineering A102807, 295$
https://www.summitracing.com/parts/msr- ... /year/1988
10 Axle studs M12-1.5,
DORMAN 610254 or GM GENUINE 09595178, 14$ - 25$
5 hole brake drum with rear groove around outer edge, 48$ x 2
Carquest Wearever Brake Drum Part # YH140454
https://shop.advanceautoparts.com/p/car ... Aj1rU7mfxI
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Option for larger ball joints makes tapered BJ adapters not needed (Item #2 above)
Weld in sleeve for S10 lower ball joint, 9$ x 2
Speedway Motors Steel Lower Ball Joint Sleeve
K6145 Style Part # 91034820
Overall Height: 1.00"
Outside Diameter: 2.37"
Inside Diameter: 2.09"
https://www.speedwaymotors.com/Steel-Lo ... 49397.html
Lower BJ, 20$ x 2
MOOG K6145T
Upper BJ, 18$ x 2
MOOG K5208