A-arms are less commonly installed, and therefore less commonly up for sale. Primarily because any worth a-arm is rather costly, relative to the rear arms at least. That and people don't find themselves needing camber correction up front as much. People typically only install the rears.

 

For a long time there were no good affordable a-arms. IMO, there still aren't - the closest being SPL.

When SPC finally decided to come out with a-arms they had some issues with coupes. They're fine on sedans and Z's, but they had to revise them for the coupes due to knocking, SES, ABS, SLIP lights. I have SPC's, and although they claim the most positive adjustment, it's not without the spacers that add a static positive 2 degrees. The arms themselves only allow 1. I did not install the spacers because I got the unrevised arms. My arms are adjusted all the way out and I'm still at -3.1. Some people are still having problems with the revised arms if they are too low and/or their front suspension is too soft (allowing the arm to travel more and knock).

With 350evo out of business now, the only arms worth considering, IMO, are the SPLs. I think they run $550?

 

I had revised SPC fronts on my last G35 and had no problems with it, running 350z H-Techs. Since I'm not planning on going any lower in the front with coilovers, I think I may be fine going with revised SPC fronts again. Gonna get an alignment first though and keeping my fingers crossed that I won't need them.

Btw cheapest you'll find SPL V2's on this board or my350z is $495.