99 sonoma viper 5701 brain mount location

Hi guys, I have a 99 Sonoma, I have a Viper 5701 Wired up and working. However my problem is I can't find anywhere to mount the head unit, the knee panel mounts up flush against everything under the dash, no room behind the headlight controls, gauge cluster, air bag switch, above or below or behind radio, or behind HVAC control. There is no center console as it is a 60/40 Bench. Any one have any experience with a 98+ Sonoma/S10 and know a reasonable spot to mount this thing? Thanks

I recently did a 2003 S-10 with an Ultra Start and an iDatalink ADS TBSL PL bypass.  I remember it being very tight everywhere.  I think I managed to fit it behind everything on the left side of the steeering wheel, near the firewall about halfway between the drivers kick panel and the steering shaft.  The wires to the BCM just reached...Soldering is fun!