Stuart Models are once again offering castings for the Stuart Triple Expansion Engine. I intend to build a Triple Expansion engine in the future. The O Burnaby Bolton casting set costs $645.00 The Stuart set $1,200.00 AUD plus freight costs. so I know which one it will be. One GBP is now about $2.50 AUD. Lee http://www.stuartmodels.com/inprod_det.cfm/section/casting/mod_id/70 MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.