[PeteLeathersac]

1'st thing, keep positive and treat it like YOU WILL end up w/ the car someday! . Keep him happy as sh*t happens and realities of life can strike him at any time, so make sure you're the one he will call when it does. . If he's near to you, drop in periodicaly and try not to be critical about his plans of resto regardless of the ways he goes about it wrong. . When there, try and note important details that may be lost during his 'resto' and take pictures of the disassembled car if possible. . Also try and buy any important original parts he's replacing w/ the repop stuff before it's too late. .
SuperNova's idea of swapping him something he wants more is your best bet....but if all else fails, blackmail may be your only final option? . A few calls from a female asking his wife if he's home then hanging up can go a long way to get things started?? . Good luck! ~ Pete