It is possible to install a msd coil in your vitara. Just not sure how the wiring layout would be, would need to see it first. I have done installing coils on a civic and I used to own a vitara. They seem to have similar layout but it has been a long time since I have done it. The bad part about it would be that you might need to drill a hole on the distributor cap for the terminals connecting to the external coil, just like on a civic. But msd sells caps for civics that have an extra connector for the coil so you don't have to do it on the original cap. You can buy an original msd connector that you can put on the cap. You can pm me your contact no. on this if you want to push through with your plan.