Battery Box for WhiteHawk 27DSRL

[bmet2000]

Hello,
My in-laws have a 27 DSRL Whitehawk
And they would like to install two Trojan T105 batteries in a battery box. Has anyone done this and is there room for a larger battery box?
They are looking at either a Noco HM426 with dimensions of 18.25” (L) x 14.25” (W) x 14.00” (H)
Or the Noco HM408 with dimensions of 24.5x12.5x13.
Thanks for any info.

[bmet2000]

Here is mine from my Open Range Roamer. It is the Noco HM408