E39 sports package installation

Please, what`s your suggestion on installing the sport package on a 528i 1997 just recently acquired? Is it possible, and if so, am I safest taking it to the dealers?

What exactly does it entail? from interior to exterior?

Thanks for your help guys.

IF IT WAS ME I WOULDNT PUT A SPORT PACKEGE ON A 1997 BMW 528I YOU CAN BUT IN A COUPLE OF MONTHS THE CAR WONT REALLY BE GOOD IT WILL GET MESSED I HAVE A BMW 745LI AND I BOUGHT IT WITH SPOT INCLUDED IF YOU JUST ADD IT LATER THE CAR WILL SUCK AND IF YOUU WILL PUT SPOT PAACKEGE GO TO A BMW DEALER AND LET THEM INSTALL IT NOT ANY PLACE WHO FIX CARS AND PUT IN SPORT PACKEGES BECAUSE BMW KNOW TO USE BMW ECUPMMENT AND THEY KNOW ABOUT HOW TO HOOK UP SOMTHING MORE THEN OTER COMPANIES :flash: