Dual cases what to buy

[Half sack]

Hello new guy to crawling-92 toyota single cab 22re 5spd trans-currently ive got truck pulled down and am doing a sas-529s and 35s daily commuter/weekend wheeler-looking hard at marlins dual cases and am curious-is the dual over kill transfercase set up to low to effectively use -any help would by appreciated-ultimate set up or dual overkill?thanks for your thoughts