98/99 Microbus Exec 2.6i

[MicroExec]

Hi everyone, new to the forum, and new to the VW van world I have bought a 98/99 exec 2.6i bus in pretty good shape, and my intention is to use it as a work van. My bakkie is too small. Currently it has the standard 2.6i motor in, and I was wondering bar replacing the motor, what can I do to get better power and yes fuel consumtion out of it?
Also it has standard rims on and I intend putting mags on, which is better and why? 17" or 18"
Thanks in advance
Shaun

[DJ7]

What type of work do you intend doing with the van?

[MicroExec]

Im a general contractor, so it will house my tools , materials etc

[Microbus 2.6]

Hi can anyone please letme no what substitute injector can i use on microbus 2.6 engine thanks