Shaun, what do you think of this for a motor mount (except it won't be black)? Basically, I took my motor mount, and tweaked it to fit the XB8.
BTW, I adjusted your rear droop screws for you

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SH Z-Car, Custom Crawler, 8s Savage,
12s XTM XLB 1/7 buggy,
4wd 4-link rear/IFS Pro4 truck,
Custom Hyper 10 Short Course,
Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz