Diego,
I currently have my 1969 351W block being stroked and built by Speedomotive. These guys where a lot of help when I was trying to decide which engine I was going to us. I am using 408W shortblock. It was bored 60 over and balenced and preped by Speed O Motive. When I pick up my engine my cost will be around $3,000.00. I supplyed bare block, Alum flywheel, Harmonic balencer,timing chain and front cover. The guys name is George Ullrich e-mail
stroker1946@yahoo.com
Roy