Need suspension combos with 20's on 69 chevelle

[first gen fan]

I am building a 69 chevelle protouring I am putting 20's on and need to find out suspension combos with lowered amount front and rear with tire sizes. I would like to run 305 in rear and 275 in front.

[ProdigyCustoms]

No problem, We can do that with a few brands of suspension we carry

Air Ride
Dettroit Speed
Hotchkis
Speedtech

Feel free to call and discuss