One of our site sponsors, HWYAUTO, has the 6.0L with transmission and I believe he's in Brownwood TX, not too awful far from you and will ship it to your door or a depot for you to pick it up. He's got good prices, also.

There is a 6.0L for sale on DFWLS1.com for $1800 with 30K on it if Austin doesn't have one available.