For info and pics on building up inlines go to
www.inliners.org
There are some great tips and pics of inlines there. I was going to build up my inline 6 but after weighing the cost and the power I wanted to achieve in the end, I built a 350 for around $2000. I have 2, 250's sitting in my stock right now and I still plan on building up an inline for the next project .