Slant 6 replacement needed

Vali68
I'm looking for either a SLant 6 to replace one that has a cracked block or I am looking for a 318 with tranny and a 8-1/4 rearend to up the power on my 68 Valiant. i am in Southern California. But am willing to travel a bit for a good deal. Hit me up folks!!!! need to get my Vali back to running.