Need lots of input for my VW trike build. I have no experience at all. Have owned Harleys and dirt bikes but nothing with three wheels. I want a long build--120" wheelbase for stability. I have a 1970 VW Beetle for a donor rear axle subframe that works well. Looking to purchase a 1600 engine. Already have the transmission. Need advice on frame build, front wheel diameter, front fork length and style, individual seating for one driver and one or two passengers. Decided on 205X15R tires. Not sure of using round tube or rectangle steel for frame. No problem titling trike here in Colorado. Lots of questions regarding attachment of frame build to subframe. I want to mount shifter on top somehow--not on side of frame. Any designs available besides Big Yella out there. Thanks for your input.