cheapest way to get into the 13s

[DisplacedOkie]

I found a set of m & h nostalgia slicks for reasonable price and also running caltracs and have 181s and a mack plug waitin to go in. I was running mid 15s before that. What yall think it would take to get there on a budget?

 

[9712valve]

16.5* timing and a a set of 370's probably.