long travel shocks?

[underpowered]

so, looking to put some about 12" stroke shocks on my blazer and on my buddies yota. online searching has turned up very little other than outdated numbers from summit. just looking for a reasonably priced normal gas shock with 12" of travel or so.

any suggestions, places to look, part numbers? only place i found some were some rancho 5000 series on a site called streetsideauto.com. thought about just goin to the local parts store and asking for their longest travel shock they stocked.