anyone used this 10" front drum to disc conversion?

List with parts and prices from www.rockauto.com, www.scarebird.com, www.summitracing.com without shipping or discounts to date: march 11th 2019

2 Rotors Raybestos 96174. $26.34
1 Caliper Raybestos RC4234 (includes pads). $41.99
1 Caliper Raybestos RC4233 (includes pads). $41.99
2 Brake hoses for 1979-82 Eldorado front, BH36959 . $17.80
1 Scarebird caliper braket for A-body 1965-72 for 10" drums $125.00
1 Summitracing adjustable brake proportioning valve SUM-G3905 $39.99

sums up to a total of: $293.11 vs scarebirds kit $479.99 (plus your choice of proportioning valve)
you will have to add the longer studs, and re-drill the rotors. Plus if using the stock 14 inch steel wheels you might have to clear the caliper (apparently some bands are narrower than others so just a matter of luck) or maybe just use a 1/4 inch spacer (I have not tried this yet) and it will end up adding outwards the wheel about 1/2" after the rotor and spacer.