2.5" Drop Spindles for '72

[TexasLS1]

I'm looking to start ordering parts for my drop and found some modular spindles from CPP for $230.00 with free shipping. Is there any reason why I should use a different spindle or go through a different manufacturer/one of our vendors? If it helps, the truck is a '72 SWB, the wheels are 18x8" with 4.5" bs (if I remember correctly), and I plan to do a 3"/4" drop. It's my first time lowering and just looking for advice...