I was just wondering if there is a fuse block on the market with these specs.

TWO INPUTS - one 4guage, one 8guage
TWO OUTPUTS - one 4guage, one 8guage

Basically im trying to use a dblock like this instead of running to fuseholders because i am running 2 power wires.

 

Tsunami makes a power and ground distribution block all in one that might do this for you. It can take a 0 and 4 guage input on both the power and ground, then give up to 4 4 gauge outputs on both power and ground. I use this distibution block all the time and it works perfect.

TSUNAMI

 

Rockford used to offer the exact piece you are looking for. It had an ANL fuseholder for large gauge wire and an AGU fuseholder for smaller wire, side by side. It's not on their site anymore.

You could use a dual ANL block, like this one:

 

Which dblock is that dukk? Having trouble finding it.

 

Ah, nevermind, i found it, that wont work. It is a 1/0 or 4guage in to two 4guage out. I basically need dual fuseholders 8->8 and 4->4