water in fuel

[aristocat]

Bought my 1988 v20 5 years ago, repowered with 150 Yamaha when old motor died last year due to water in motor. Had fuel tank pumped. First time used this year - new motor died -- water in injectors. Anyone know what a new gas tank with installation should cost?

Also looking for a rear bench seat like original -- anyone know where to buy original replacement (don't want pontoon style seat)

Thanks