Saturn IB with Titan boosters

[Orionblamblam]

I put a document and a drawing set up for sale on my website describing the Improved Saturn IB:
http://www.up-ship.com/drawndoc/drawndocspace.htm

This idea included the notion of stretching the S-IB first stage and attaching up to four Titan boosters or up to eight Minuteman boosters. Payload performance would get really quite impressive by doing that...