Changing from a VF to a TD

[Marshffs]

Hello chaps, been a while. 

I think my turbo seals have gone or going on my VF35, I’m not that keen on the turbo anyhow as the boost comes on at around 3.5-4K and want it sooner. Rather than spend a fortune to replace the VF with another unit or get mine rebuilt, is it possible to bolt on a TD05 or will it need mapping? It couldn’t of happened at a worse time to be honest but hey ho.